Virtual local area networks (VLANs) are made up of networked devices that are grouped logically into separate networks. You can group ports on a switch to create a virtual network made up of the devices connected to the ports.
You can group ports in VLANs using either port-based or 802.1Q criteria:
- Port-based VLANs. Assign ports to virtual networks. Ports with the same VLAN ID are placed in the same VLAN. This feature provides an easy way to partition a network into private subnetworks.
- 802.1Q VLANs. Create virtual networks using the IEEE 802.1Q standard. 802.1Q uses a VLAN tagging system to determine which VLAN an Ethernet frame belongs to. You can configure ports to be a part of a VLAN.
When a port receives data that is untagged, the data is delivered normally. However, when a port receives data that is tagged for a VLAN, the data is discarded unless the port is a member of that VLAN.
This technique is useful for communicating more securely with devices outside your local network as well as receiving data from other ports that are not in the VLAN. For you to be able to use an 802.1Q VLAN, you must know the VLAN ID.
For more information about using VLANs on your GS908E, see the following knowledge base articles:
- How do I create and manage port-based VLANs on my NETGEAR GS908E switch?
- How do I create and manage 802.1Q VLANs on my NETGEAR GS908E switch?
For more information about VLANs, see the following knowledge base articles:
Last Updated:07/07/2025
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Article ID: 000051458